.net图片上传

[nitaiyoucala]

跪求可以在客户端预览图片和裁剪图片的图片上传功能源码 谢谢

[wuyq11]

<script language="javascript" type="text/javascript">
function PreviewImg(imgFile)
{
var newPreview = document.getElementById("newPreview");
newPreview.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = imgFile.value;
newPreview.style.width = "80px";
newPreview.style.height = "60px";
}
</script>
<asp:FileUpload ID="FileUpload1" runat="server" onchange="PreviewImg(this)" />
<div id="newPreview"> </div>


function $(o){return document.getElementById(o);}
function CheckImg(o,img)
{
if (!/\.((jpg)|(bmp)|(gif)|(png))$/ig.test(o.value))
{
alert('只能上传jpg,bmp,gif,png格式图片!');
o.outerHTML = o.outerHTML;
}
else
{
$(img).filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src=o.value;
}
}

<asp:FileUpload ID="FileUpload1" runat="server" onchange="CheckImg(this, 'img');" />
<div id="img" style="filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src= <%= pic%>,sizingMethod=scale);width:88px;height:113px;"> </div>
public string pic="";

http://topic.csdn.net/u/20100829/19/0263ef4a-7171-4662-892c-e2ede7a46cc5.html?seed=1813362041&r=68016080

[大明湖畔_帅锅]

function preview()  
    {  
       var picId = $("#picId").val();  
       var fileext=picId.substring(picId.lastIndexOf("."),picId.length);  
       fileext=fileext.toLowerCase();  
        $("#fileext").val(fileext);  
        if ((fileext!='.jpg')&&(fileext!='.gif')&&(fileext!='.jpeg')&&(fileext!='.bmp'))  
       {  
           alert("照片格式错误!");  
           $("#picId").focus();  
       }  
       else  
       {  
           $("#newPreview").html('');  
           var newPreview =$("#newPreview")[0];    
           var imgDiv = document.createElement("div");   
           document.body.appendChild(imgDiv);  
           imgDiv.style.width = "180px";    
           imgDiv.style.height = "140px";  
           imgDiv.style.filter="progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod = scale)";     
           imgDiv.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = picId;  
           newPreview.appendChild(imgDiv);  
       }  
   }

<input name="uploadFile" type="file" class="input_width" id="picId" maxlength="50" onchange="preview()"/>  
    （推荐上传图片像素大小为180*140)  
  <div id="newPreview"></div>

[leiziaitudou]

http://topic.csdn.net/u/20100910/18/0c28f8d3-f552-4e13-825b-50dd35d65c17.html
看看

[wwfgu00ing]

http://www.open-open.com/ajax/2_Upload.htm